1. Introduction to Compact Transformation Groups;Bredon,1972
2. Topological complexity of basis-conjugating automorphism groups;Cohen;Pacific J. Math.,2008
3. Lusternik–Schnirelmann Category;Cornea,2003
4. Lectures on Algebraic Topology;Dold,1980
5. On the Lusternik–Schnirelmann category of abstract groups;Eilenberg;Ann. of Math. (2),1957